The game involves raising, fighting, and breeding monsters. The main character is never seen on screen, but always talks to his apprentice, Cleo, directly. The player chooses his actions and choices through menu options. The way you make money, and gain ranks, is by having your monster fight in tournaments. In a fight, your monster and its opponent both start with 50 Guts, which is basically energy to spend on the moves they know; Guts regenerate over the course of the battle, but slowly. You can control the monster yourself or let it fight on their own.